Padlock.



T. o. MOB'.

PADLOGK.

APPLIoATIoN FILED 00T. 24, 19104l UNITE@ STATES FAIEN FFIQE.

THORSTEIN OLSEN MGE, OF CHRISTIANIA, NOBNVAY, .ASSIGNOR TO A/ S DE FORENEDE NOR/SKB LAASE- & BESLAGFABRIKER, F CHRISTIANIA, NORWAY.

PADLOCK.

escasa.

Speccation of Letters Patent.

Patented Mar. 28, 1911.

Application led October 24, 1910. Serial No. 588,750.

To all lwhom it may concern:

Be it known that I, TrroRsTniN OLSEN Mon, a subject of the King of Norway, residing at Christiania, Norway, have invented certain new and useful Improvements in Padlocks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or gures of reference marked thereon, which form a part of this specification.

The present invention relates to improvements in padlocks of the kind in which the bolt extends in its locked position across a recess in the lock case.

According to the present invention, the arm, at the outer end of which the bolt is mounted, is formed with a disk-like enlargement at its point of rotation, this disk-like i portion being provided with notches corresponding with spring actuated pawls so arranged as to retain the bolt arm in its two positions.

'Ihe invention also comprises special arrangements by which said pawls can be raised, by means of the key, out of their engaging position.

The invention also comprises the constructional arrangement of the lock.

A few forms of padlocks embodying the invention are illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the lock with one side plate removed and the bolt in its locked position. Fig. 2 is a sectional elevation similar to Fig. 1, the bolt occupying a position intermediate of its locked and its opened positions. Fig. 3 is a cross-section through the lock on the line III-III of Fig. 1. Figs. 4 and 5 show two modiications.

In the example shown the lock body is cylindrical and has a sector-like recess 2, through which the bolt passes. The bolt is carried by a radially extending arm 4, the inner end of which is formed with a disklike enlargement 5 pivoted on a pin 6 extending centrally through the lock body. In the circumference of the enlarged portion is arranged at diametrically opposite sides, two

adjacent notches 7, 8 and 9, 10 in which-the ends 11 and 12 respectively of a bow spring 13 can engage, when the bolt is at the limits of its movement.

On each side of the disk-like enlargement 5 and pivotally mounted relatively to the same on the pin 6, are arranged tumblers 14 and 15 respectively, forming releasing members. The movements of the latter relatively to the disk-like portion 5 is limited by pin 16 secured to said disk-like portion and projecting into openings 17 in the tumblers. These openings have a somewhat larger diameter than the pins 16, so that the tumblers can perform a small movement before engaging the pin. 0n the upper corners of both tumblers are formed lugs 18 acting as a cam on the ends of the spring. In each of the tumblers is a notch 19 registering with each other in all positions of the disks and serving to receive the key to engage the disks.

In Fig. 1 the bolt is shown in its locked position. If the key 21 is inserted over the pin and is turned anti-clockwise, it will engage the notches 19 of the tumblers, which are thereby turned relatively to the disk-like enlargement 5, until the pin 16 strikes the opposite side of the opening 17. During this operation the lugs 18 of the tumblers force the ends 11 and 12 respectively of the spring out of the notches 7, 9 of the disk-like enlargement 5, in which they were resting (see Fig. 2). The disk 5 is thereby released and, on continuing the turning of the key, can rotate, until the spring ends 11 and 12 will fall into the notches S and 10 respectively of the disk 5. The bolt will then have been brought to its opened position and is retained therein by the spring ends 11 and 12, until the key is turned in the opposite direction. One side of each of the notches 8 and 10 is inclined, so that the bolt can be brought in its locked position by hand, the inclined face, on turning the bolt disk, raising the springs out of their engagement.

The simple and strong lock device above described can of course be made perfectly thief-proof by the arrangement of safetytumblers and the like.

In the modification shown in Fig. 4 there are arranged instead of the spring pawl 13, pivoted arms 25 and 26 actuated by separate springs and the upper, angularly projecting ends n27 and 28 of which engage in corresponding notches 34 and 35 in the circumference of the bolt disk The tumbler let is in its locking position locked to the bolt disk by means of an arm 30y disposed be-` the recess l) for the key-bit, so that it can bev actuated by the key 2l and on turning the latter, be swung out of engagement with the tumbler lll, the pavvl 28, whichengages the said pivoted arm 30, being at .the same time brought out ot its engagement in the notch ot the bolt disk 5. The other paWll 27 is released by the cam 18 of the tumbler in the saine malmer as in F ig. 2 and `When the lock is open, the paivl engages the notches 36 and 37 ot thel disk 5 and tumbler lll. This con.- structi nal form may be simplified by using one pawl and one tumbler only.

ln the modification vshown in? ig. 5 the bolt disk is looked only on one side et its pivot. The locking dcviceconsists of a series ot paivls fl-0 superposed upon one another and pivoted on a common pin el andA being each provided With a spring 2 in en.

gag-ement with a pin.. Att their front end these pavvls are provided With a tooth l engaging a. notch lll in .the bolt disk rllhe pau'ls are moreover provided With a projecti'on /l riding on a cam surface 1S arranged on corresponding tumblers 14s, which are pivoted` on the pin G and can be turned by the'key 2l.

What l claim is:

rlpadlock comprising an arm pivotally connected with the lock case, an arc shaped bolt extending from the outer end of said arm, a lockcase having a gap across which the said bolt may be moved, When the said farm is swung on its center, a disk-like enlargement ot the armai'ound its center, a notch in the said. enlargement, a spring actuated pawl` capable of engaging said notch, a tiunbler lia-ving a limited rotatable movenientand being' provided with an actuating :tace capable of' engaging said spring actuated paWl and a keyhole so disposed, that upon turning the key, said tumbler Will be caught bythe key, thereby first disenguging the vpavrl and then engaging the latch arm and turn it upon its pivot.

2. A padlock comprising an arm pivotally connected with the lock case, an arc shaped bolt extending from the outer end of said arm, a lock case having a gap, across which the said bolt may be moved when the said arm issvvung on its center, a disk-like enlargement of the arm around its center, a notch in the said enlargement, a spring actuated paivl capable ot' engaging said notch, a tumbler on the enlargement having a limited rotatable movement and being provided vvith an actuating tace capable ot engaging said spring actuated pawl, a member pivotally mounted on the said enlargement and having a part capable ot engaging the said tumbler, thereby arresting it, and having another part, projecting into the path ot the key bit as to bek moved by the key, thereby releasing thetumbler.

3.A padlock comprising an arm pivotally connected With the `lock case, an arc shaped bolt extending from the outer end of said arm, a lock case having a gap, across which the said boltV may be moved When the4 said arm `is swung on rits center, disk-like enlargement of the arm around its center, notches ink the said enlargement, spring` ac-y tuated paivls capable of engagingr said notches, tumblers on the enlargement hav ing a limited rotatable movement and beingy provided with actuating faces, capable ot engaging said spring actuated pavvls andi a key holesodisposed,.that upon turning the key, said tumblers Will be caught by the key, thereby lirst disengaging the pavvls and` then engaging. the latch arm and turn it upon its center. c

il. Er padlock comprising an arm pivotally connected With the lock ase, an arc shaped bolt. extending from the outer end of said. arm, a lock case having a gap across which the said bolt may be moved when the said arm is swungron its center, disk-like enlargement ot the arm around its center, notches inthe said enlargement, spring actuated pawls capable of engaging' said notches, tumblers on the enlargement having a limited rotatable movement and be` ing provided WithV actuating faces, capable of engaging said spring actuatedpaivls, a, member pivotally mountedv on the said enlargement and having a part capable ofengaging one ol said tumblers thereby arresting it, and having another part projecting' into the path ot the key bit, so as tobe moved by the key, thereby releasing the said tumbler. g t t ln testimony that l claim the foregoing as my invention, l have signed my name in presence of tivo subscribing Witnesses.

THORSTEIN OLSEN MGE.

lvitnesses Nana Pnnneson, Man/IN Gufrfroimsnr.

Copies ol' this patent may be obtained for five. cents each, by addressing the Commissioner of Patents,

Washington, D. C, i 

